U-Series dating of Liujiang hominid site in Guangxi, Southern China

It has been established that modern humans were living in the Levant and Africa ca. 100 ka ago. Hitherto, this has contrasted with the situation in China where no unequivocal specimens of this species have been securely dated to more than 30 ka. Here we present the results of stratigraphic studies and U-series dating of the Tongtianyan Cave, the discovery site of the Liujiang hominid, which represents one of the few well-preserved fossils of modern Homo sapiens in China. The human fossils are inferred to come from either a refilling breccia or a primarily deposited gravel-bearing sandy clay layer. In the former case, which is better supported, the fossils would date to at least similar to 68 ka, but more likely to similar to 111-139 ka. Alternatively, they would be older than, similar to 153 ka. Both scenarios would make the Liujiang hominid one of the earliest modem humans in East Asia, possibly contemporaneous with the earliest known representatives from the Levant and Africa. Parallel studies on other Chinese localities have provided supporting evidence for the redating of Liujiang, which may have important implications for, the origin of modem humans. (C) 2002 Elsevier Science Ltd. All rights reserved.

Site-directed mutagenesis of the ATM promoter: Consequences for response to proliferation and ionizing radiation

Although ATM, the protein defective in ataxia-telangiectasia (A-T), is activated primarily by radiation, there is also evidence that expression of the protein can be regulated by both radiation and growth factors. Computer analysis of the ATM promoter proximal 700-bp sequence reveals a number of potentially important cis-regulatory sequences. Using nucleotide substitutions to delete putative functional elements in the promoter of ATM, we examined the importance of some of these sites for both the basal and the radiation-induced activity of the promoter. In lymphoblastoid cells, most of the mutations in transcription factor consensus sequences [Sp1(1), Sp1(2), Cre, Ets, Xre, gammaIre(2), a modified AP1 site (Fse), and GCF] reduced basal activity to various extents, whereas others [gammaIre(1), NF1, Myb] left basal activity unaffected. In human skin fibroblasts, results were generally the same, but the basal activity varied up to 8-fold in these and other cell lines. Radiation activated the promoter approximately 2.5-fold in serum-starved lymphoblastoid cells, reaching a maximum by 3 hr, and all mutated elements equally blocked this activation. Reduction in Sp1 and AP1 DNA binding activity by serum starvation was rapidly reversed by exposure of cells to radiation. This reduction was not evident in A-T cells, and the response to radiation was less marked. Data provided for interaction between ATM and Sp1 by protein binding and co-immunoprecipitation could explain the altered regulation of Sp1 in A-T cells. The data described here provide additional evidence that basal and radiation-induced regulation of the ATM promoter is under multifactorial control. (C) 2003 Wiley-Liss, Inc.

A trag??dia da regi??o serrana do Rio de Janeiro em 2011: procurando respostas

O estudo de caso trata do desastre natural ocorrido na regi??o serrana do Rio de Janeiro nos dias 11 e 12 de janeiro de 2011, considerado a maior cat??strofe clim??tica e geot??cnica do pa??s, causado por fortes chuvas que provocaram enchentes e deslizamentos em sete munic??pios. O caso tem por finalidade despertar a discuss??o sobre as vari??veis e atores que influenciaram o processo de gest??o da crise, contextualizando o desastre no cen??rio da regi??o e reconstituindo, especialmente, o processo de resposta imediata dada ?? trag??dia pelos ??rg??os envolvidos. O estudo pode ser utilizado em cursos que abordem, entre outros, os seguintes t??picos: gest??o de crise e gest??o de riscos, negocia????o, comunica????o e planejamento estrat??gico

Um (Des)caso do planejamento estrat??gico em ??rg??o da Administra????o P??blica

O estudo de caso descreve o processo de planejamento estrat??gico ocorrido em uma organiza????o p??blica e os resultados alcan??ados ap??s a sua implanta????o. A organiza????o, com o nome fict??cio de Companhia de Defesa, desenvolveu seu planejamento estrat??gico com inten????o de aderir ?? administra????o estrat??gica. Os principais problemas reconhecidos pela organiza????o s??o a morosidade, a falta de transpar??ncia e a inefici??ncia de suas a????es. Atuaram no planejamento estrat??gico a alta administra????o, coordenadores nomeados e representantes regionais e uma consultoria especializada. O ambiente organizacional existente ?? ??poca n??o foi prop??cio ao planejamento estrat??gico: mudan??as de dire????o, pouca capacita????o funcional, capilaridade da institui????o e dificuldade de consenso entre planejadores e executores. ?? poss??vel, ??queles que estudarem o caso, contrapor a teoria e a pr??tica do planejamento estrat??gico, identificando boas a????es realizadas e erros cometidos

Caso de ensino de marketing social: uma parceria entre a administra????o p??blica e uma empresa de comunica????o

O Detran/RS, em parceria com uma empresa de televis??o cuja programa????o ?? direcionada principalmente aos jovens, realizou campanha social sobre seguran??a no tr??nsito. Ap??s algumas edi????es dessa campanha, chegou o momento de se mensurar de forma adequada o sucesso da iniciativa. O caso foca a cria????o e a implementa????o de campanhas de marketing social em que h?? parceria entre a administra????o p??blica e uma empresa de comunica????o, e principalmente o desenvolvimento e a escolha de par??metros de mensura????o da efetividade de campanhas de marketing social

A hist??ria de Henrique: quando as habilidades de l??der s??o testadas ap??s a ascens??o profissional

Henrique, funcion??rio antigo de um importante programa governamental, ?? promovido ao mais alto cargo do programa. Devido a algumas posi????es e a????es ortodoxas, colegas e superiores come??aram a questionar o estilo e as iniciativas de Henrique. Ele, por sua vez, ao identificar as cr??ticas, voltou-se para fora da institui????o, transformando-se em ???embaixador do programa???, com viagens semanais e cada vez mais ausente. Seus subordinados tamb??m come??aram a se queixar e o Ministro finalmente mostrou insatisfa????o a respeito. Ao final do caso, prop??e-se um exerc??cio de avalia????o sobre as habilidades de Henrique

Comprasnet: o site da transpar??ncia das compras governamentais

O Site www.comprasnet.gov.br, utilizando recurso da Internet, est?? definindo novas estrat??gias para as Compras Governamentais. Entre as funcionalidades existentes, os usu??rios do governo, fornecedores e a sociedade contam com os seguintes servi??os: Legisla????o: trata dos assuntos legais pertinentes, Publica????es: voltado ??s not??cias de interesse comum entre os usu??rios; Servi??os de Livre Acesso: disponibiliza, entre outros, o SICAFWEB, Preg??o Eletr??nico, Consulta Licita????o; Servi??os por Assinatura: agrega valores para atender necessidades espec??ficas dos usu??rios cadastrados. Exemplo: Consulta Licita????es com acesso a itens e editais, Listas Preferenciais, etc. e, o SIASG que concentra F??rum de Discuss??o, Consultas Gerenciais, Homologa????o de Preg??o Eletr??nico, al??m dos diversos m??dulos que o comp??em

Mid- to Late-Holocene estuarine infilling processes studied by radiocarbon dates, high resolution seismic and biofacies at Vitoria Bay, Espirito Santo, Southeastern Brazil

A Baía de Vitória é um estuário com 20 km de comprimento, morfologicamente estreito, com um regime de micromaré e, como outros estuários modernos, formado durante a última transgressão pós-glacial. A morfologia de fundo do estrato estuarino é caracterizada por um canal natural principal limitado por planícies de maré com manguezais desenvolvidos. Datações de radiocarbono originais foram obtidas para a área. Cinco idades de radiocarbono estendendo-se de 1.010 a 7.240 anos AP foram obtidas através de dois testemunhos de sedimento, representando uma sequência estratigráfica de 5 m de espessura. Os resultados indicam que até aproximadamente 4.000 anos cal. AP, as condições ambientais da Baía de Vitória eram ainda de uma baía aberta, com uma conexão livre e aberta com águas marinhas. Durante os últimos 4.000 anos a baía experimentou uma fase de regressão importante, tornando-se mais restrita em termos de circulação da água do mar e provavelmente aumentando a energia de marés. Três superfícies estratigráficas principais foram reconhecidas, limitando fácies transgressiva, transgressiva/nível de mar alto e regressiva. A morfologia do canal atual representa um diastema de maré, mostrando fácies regressivas truncadas e erodidas. Biofácies de foraminíferos, passando de ambiente marinho para ambiente salobro e de manguezais em planície de maré confirmam a interpretação sismoestratigráfica. A ausência de biofácies de mangue em um dos dois testemunhos é tambémuma indicação de ravinamento de maré atual.

Cultural tourism in Northwest Portugal – the case of the world heritage site of Guimarães

A cidade de Guimarães, no noroeste português, é um espaço imbuído de um forte significado simbólico e cultural. A acreditação pela U.N.E.S.C.O. do seu centro histórico como Património Cultural da Humanidade, em Dezembro de 2001, contribuiu significativamente para aumentar o seu potencial em termos turísticos. Na realidade, desde aquela data, tem-se assistido a um aumento sustentado do número de visitantes. O presente capítulo debruça-se sobre a análise de alguns resultados de um inquérito por questionário aplicado aos residentes do município de Guimarães com o objetivo de avaliar a sua perceção dos benefícios que a atividade turística pode trazer. O inquérito foi implementado entre Janeiro e Março de 2010. Os resultados mostram que aqueles revelam uma perceção favorável dos impactos do turismo e que esta perceção está correlacionada com a idade e o nível de instrução dos inquiridos.

The host-tourist interaction in a world heritage site: the case of Guimarães

Guimarães, in the northwest of Portugal, is a city of strong symbolic and cultural significance and its nomination by UNESCO as world heritage, in 2001, enlarged its tourism potential. In this paper we present a few results of a survey that envisaged capturing the Guimarães residents’ perceptions of tourism impacts and their attitudes towards tourists. Specifically, one analyzes the type of relationship that exists between some socio-demographic groups and the perceived tourism impacts, as well as their socio-characteristics and the existing level of interaction between residents and tourists. The survey was implemented between January and March 2010 to a convenience sample of 540 inhabitants of the municipality of Guimarães resulting in 400 questionnaires with complete data. For this, we made use of various statistical techniques. Using a factorial analysis, we can conclude that the three factors used explain 52.3% of the variance contained in the original variables obtained from the survey. By another side, using a logit model in the analysis and taking as the dependent variable the frequent or very frequent contact with tourists, we found that only the variables referred to perceived positive impacts of tourism, education and the place of residence in urban areas have shown to be statistically significant. We are aware of the multiple ways the issue of residents’ perceptions and attitudes towards tourism can be approached and of the difficulties to get useful policy-oriented insights. This paper is a step in that trail.

Does gender affect visiting a world heritage site?

The city of Guimarães in Portugal is a place of strong symbolic and cultural significance, and the nomination of its historical center as a World Heritage Site in 2001 enhanced its tourism potential. This study presents the results of a survey conducted in 2010 and 2011 to capture the profile and motivations of tourists visiting Guimarães as a cultural tourism destination. The study addressed two main issues: whether males and females have similar or different preferences in choosing the city as their destination, and whether there are gender differences in the perception of the attributes of Guimarães. A better understanding of the gendered nature of the destination is a valuable cue for shaping products and services according to visitors’ preferences. The results suggest that both men and women are aware of the main elements responsible for the city’s World Heritage status. That the destination is a Heritage Site that also offers the opportunity to tour the region has a significant positive effect on male tourists’ choice of Guimarães. Regarding the perceived attributes of the city, results indicate minor gender differences with one exception: Women expressed more apprehension than men regarding the perceived security of the destination.

How does gender affect visiting a world heritage site?: the case study of Guimarães

To date few studies have been undertaken in Portugal dealing with the attitudes, motivations, and profile of tourists who visit World Heritage Sites. Also, few studies have dealt with destination image (e.g., Agapito, Mendes & Valle, 2010; Lopes, 2011). As far as it is known, none have approached the issue of gender differences in the choice of a Portuguese heritage destination. Since cultural tourism destinations need to differentiate themselves from each other, appropriate market segmentation must be based on a deep understanding of the customers’ motivations and preferences. Keeping in mind results from empirical literature (e.g., Silberberg, 1995; Beerli & Martin, 2004; Richards, 2004; Pérez, 2009; Sheng, Shen, & Chen, 2008), gender seems to be a possible approach to market segmentation, whether for Guimarães or for other cultural tourism destinations around the world. Located in the north-western region of Portugal, Guimarães is a city of strong symbolic and cultural significance, and the nomination of its historical centre as a World Heritage Site in 2001 enhanced its tourism potential. This study analyses the possible relation between gender and attitudes and motivations towards a World Heritage Site, such as Guimarães. Additionally, the empirical approach used in the study tries to capture differences in the perceived attributes of the city. Commonalities and distinctions within and between groups of tourists, by focusing on the specific characteristic of gender, were analysed. The study addressed two main questions: first, whether males and females have similar or different preferences in choosing the city as their destination; and, second, whether there are gender differences in the perception of the attributes of Guimarães. A better understanding of the gendered nature of the destination is a valuable cue for shaping products and services according to visitors’ preferences.

Does Gender Affect Visiting a World Heritage Site?

The city of Guimar˜aes in Portugal is a place of strong symbolic and cultural significance, and the nomination of its historical center as a World Heritage Site in 2001 enhanced its tourism potential. This study presents the results of a survey conducted in 2010 and 2011 to capture the profile and motivations of tourists visiting Guimar˜aes as a cultural tourism destination. The study addressed two main issues: whether males and females have similar or different preferences in choosing the city as their destination, and whether there are gender differences in the perception of the attributes of Guimar˜aes. A better understanding of the gendered nature of the destination is a valuable cue for shaping products and services according to visitors’ preferences. The results suggest that both men and women are aware of the main elements responsible for the city’s World Heritage status. That the destination is a Heritage Site that also offers the opportunity to tour the region has a significant positive effect on male tourists’ choice of Guimar˜aes. Regarding the perceived attributes of the city, results indicate minor gender differences with one exception: Women expressed more apprehension than men regarding the perceived security of the destination.